Ore-elevator



(No Model.)

W. AyfiARTT-g.

0KB ELEVATOR.

Patented Apr. 8, 1884.

INVENTOR ATTORNEYS.

PETERS. Piwlomhngn m Wnhingtbn. uc.

25 paratus.

UNITED STATES .Alrsrrr FFICEQ W'ILLTAM ALLEN HARTT, OF ROCHESTER, NEW YORK.

O RE-EL EVATO R.

SPECIFICATION forming part of Letters Patent No. 296,560, dated April a, 1884.

Application filed February 20, 1884. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM ALLEN HARTT,

of Rochester, in the county of Monroe andand other materials out of mines, vessels, boats, i and other places, the said apparatus being contrived for utilizing the gravity of the material on a descending grade of greater length than the one up which the material has to be raised, for raising it up said grade, and for efi'ecting 1 the return of the cars, without other power,

all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate cor- -2o responding parts in all the figures.

Figure 1 is a sectional elevation of a mineshaft out of which the ore is to be raised, and of a mountain side down which the ore is to be delivered, with a side elevation of the ap Fig. is a plan view of the apparatus. Fig. 3 is a side elevation of a brake apparatus to be used for controlling the operation of the cars. Figs. 4 and 5 are side and end elevations of spring mechanism to elevate 0 the empty cars ashort distance from the dumping-place, to facilitate the return of the cars from the level to the mine-grade.

The apparatus is more particularly adapted for mining operations where the ore and waste 5 have to be raised up the shaft and lowered down the outside of the mountain to a convenient place to load into wagons or cars, as is generally the case in gold, silver, copper, coal, and other mines, and where the down grade is longer than the upgrade.

In this example I have represented an upgrade, a, on which the ore is to be raised out of the mine-shaft b, of about half the length ofthe downgrade a, on which the ore is to be lowered to the dumping-place d, where it is shaft and the top of the grades, I arrange two rail-tracks, f and side by side for a short distance, one of which, f, extends down the inner shaft in one direction, and the other way runs into track g by the switch 71. The other track, g, extends down the side of the mountain to the dumping-place one way, and the other way runs into the track f by the switch 1 ,for enabling theloaded and empty cars to pass each other and be switched from one track to the other.

Over the middle of the double-track section, and high enough for the cars j to pass under it, I arrange a drum-shaft, 7;, in suitable upright supporting-frames, Z, with a drum, on, over the mine-trackf, to raise and lower the cars in the shaft Z) by a rope, n, and another drum, 0, over the outside track, g, to raise and lower the cars thereon by the rope p. The drum 0 is so much larger than the drum on as the track g is longer than track f, so that the cars will run the different tracks in the same time and by the car on one track pulling the car on the other track. From the drums the respective ropes run over guide-pulleys q, in order to traverse the whole length of the double-track section, to facilitate thedrawing of the cars under and past the drums to the switches, and suitable carrying-pulleys, t, for the ropes will, in practice, be located at intervals along the tracks, to lessen the friction on the ropes and protect them from wear.

In operating the apparatus, three or more ore-cars, j, and one dead-weight car, s,will be used, the dead-weight car being to overbalance the empty car and the difference in the size of the drums, and draw the empty car back from the dumping place, said deadweight car running up and down the track 1. Supposing the empty cars 3' to weigh one hundred and fifty pounds each, the dead-weight car three hundred and fifty pounds, and the weight of the load one thousand pounds, it will be seen that the car j, with its load, and the dead-weight car, will amount to fifteen hundred pounds to be raised up the track f, and the power to raise it will consist of the loaded car, amounting to eleven hundred and fifty pounds, descending the track and being doubled in effeet by the leverage of drum 0 double that of drum on. When theloaded car has been raised up to the level 6 and the descending car has discharged its load at d, the loaded car is disconnected from rope n and run forward to the switch h, and the empty car standing at the switch 73 is then shifted over and hooked onto rope n and the dead-weight car 8; these two, amounting to five hundred pounds, are then pushed off the level to run down track f and draw up the empty car on track g, which they will overbalance by two hundred pounds, said car being itself one hundred and fifty pounds and the leverage of the drums increasing it to double the amount. Thus it will be seen that whenever the outside grade is longer than the mine-grade, the apparatus may be made to do all the work of raising and lowering the material by its own gravity. The difference in the sizes of the drums is to be proportion'ed to the difference in the lengths of the grades. In some cases, as the one here represented, in which the angles of the grades are equal, or nearly so, and the outside grade is materially longer than the inside grade, the car going down the outside grade overbalances the others to such extent that a brake is necessary to control the speed; and for this purpose I propose to construct the large drum 0 with a groove, a, for a friction-strap, c, to be connected at its respective ends to the lever 10, each side of thefulcrum-pivot at, so that the strap will be tightened by the movement of the said lever in one direction and slackened by the reverse movement, and I connect the long arm of the lever to an endless cord, y, running over pulleys 2 on posts located near the points q, the rope running between the parallel tracks, so that the attendant may work the lever from any point on the platform by pulling the cord one way or the other, and for a means of fastening the lever in different positionsto set the brake with more or less power I have arranged the notched bar a where the lever will swing along it, and so that the cord will bear it into and maintain it in any notch with which the lever may be set, and so that when the attendant desires to shift the lever he will first pressthe cord and lever laterally out of the notch; but other brake contrivances may be used. Greater steepness of the grade 9 will give greater preponderance of the cars on it, and the preponderance will diminish as the grade is less steep.

The dead-weight car may be weighted altogether by the material of which it is composed, or partly thereby and partly by extraneous matters loaded on it.

The carsj may be tripped for unloading at the dumping-place d by any approved contrivance of stop device, b, arranged to push a tripping-slide of any suitable kind on the cars.

In order to provide sufficient slack of the rope p to enable a man to push the upper car off the level 6 into the mine-shaft without being obliged to raise the empty car below, I propose to employ an arrangement which consists of a gang of two springs, a, suitably arranged on supports b at the sides of the track 9 at the lower end, to be compressed by projections c on the car when it descends to the tripper, and which springs have sufficient length and power to raise the empty car the required height. The springs are to be properly adjusted to allow the loaded cars to descend to the tripper 1), against which the tripping-lever d On the car strikes to effect the dumping of the car. 7

In the main shaft the track generally runs off 011 a level to change the cars, on which the cars may be run back by hand to the bottom of the grade, to afford the slack for enabling the loaded cars to be pushed forward to the grade 0 on the level, thus avoiding the need of such a contrivance for that side.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with an inclined way, up which the ore or other material is to be raised, and another inclined way, down which the material is to be delivered, and being longer than the first inclined way, and with the cars' and operating ropes therefor, of a dead-weight car and a drum for the rope of the discharging-way, of a larger diameter than the drum for the rope of the hoisting-way, sub stantially as described.

2. The combination, with the inclined ways f 9, having parallel overlapping sections on the level 0, also the connecting-switches h i, of the drums m 0, of different sizes, operatingropes a 1), three or more cars, j, and a deadweight car, 8, substantially as described. 3. In an ore-elevating apparatus consisting of the inclined ways f 9, having parallel overlapping sections on the level 6, and switches h i, with drums m o, hoisting-ropes a p, and cars j, the guide-pulleys q, arranged to extend the ropes of the respective ways past the ends of said level sections from the respective operating-drums, substantially as described.

4. The combination of the brake '12 and lever w, having the endless cord y, and notched holding-bar a, with the drum 0, hoisting-ropesn p, inclined ways f g, and the carsj s, substantially as described.

5. The combination, with the inclined ways f g, having parallel and overlapping sections, and the connecting-switches h i on the level 6, of spring mechanism located at the lower end of the way 9, and adapted to be compressed by the descending loaded cars, and to raise the empty cars to slacken the rope and facilitate the pushing of the cars onto the wayf, substantially as described.

WVILLIAM ALLEN HARTT;

Vitnesses:

JAMEs M. NIVEN, GEO. H. HUMPHREY. 

